2002-07-23 Stephane Carrez <stcarrez@nerim.fr>

        * README: Mention 68HC11/68HC12 support.
        * configure.in: Recognize m6811-elf and m6812-elf.
        * configure: Regenerated.
        * m68hc11/Makefile.in: New file.
        * m68hc11/configure.in: New file.
        * m68hc11/configure: New file.
        * m68hc11/crt0.S: New file.
        * m68hc11/sci-inout.S: New file for 68hc11/68hc12 sio.
        * m68hc11/sim-valid-m68hc11.ld: New file.
        * m68hc11/sim-valid-m68hc12.ld: New file.
        * m68hc11/syscalls.c: New file.

1 files changed, 74 insertions, 0 deletions

diff --git a/libgloss/m68hc11/syscalls.c b/libgloss/m68hc11/syscalls.c
new file mode 100644
index 000000000..071583d9c
--- /dev/null
+++ b/libgloss/m68hc11/syscalls.c
@@ -0,0 +1,74 @@
+/* pseudo system calls for M68HC11 & M68HC12.
+ * Copyright (C) 1999, 2000, 2001, 2002 Stephane Carrez (stcarrez@nerim.fr)	
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+extern void outbyte(char c);
+extern char inbyte(void);
+
+int
+read(int file, void *p, size_t nbytes)
+{
+  int i = 0;
+  char* buf = (char*) p;
+  
+  for (i = 0; i < nbytes; i++) {
+    *(buf + i) = inbyte();
+    if ((*(buf + i) == '\n') || (*(buf + i) == '\r')) {
+      i++;
+      break;
+    }
+  }
+  return (i);
+}
+
+int
+write(int file, const void *p, size_t len)
+{
+  const char *ptr = (const char*) p;
+  int todo;
+  
+  for (todo = len; todo; --todo)
+    {
+      outbyte (*ptr++);
+    }
+  return(len);
+}
+
+void *
+sbrk(size_t incr)
+{
+  extern char _end;		/* Defined by the linker */
+  static char *heap_end;
+  char *prev_heap_end;
+
+  register char *stack_ptr asm ("sp");
+
+  if (heap_end == 0) 
+    {
+      heap_end = &_end;
+    }
+  prev_heap_end = heap_end;
+  if (heap_end + incr > stack_ptr)
+    {
+      write (1, "Heap and stack collision\n", 25);
+      abort ();
+    }
+  heap_end += incr;
+  return ((void*) prev_heap_end);
+}
+
+/* end of syscalls.c */